CVE-2022-26305 Execution of Untrusted Macros Due to Improper Certificate Validation

2022-07-2500:00:00

CWE-295

Document Fdn.

www.cve.org

8.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.5%

JSON

An Improper Certificate Validation vulnerability in LibreOffice existed where determining if a macro was signed by a trusted author was done by only matching the serial number and issuer string of the used certificate with that of a trusted certificate. This is not sufficient to verify that the macro was actually signed with the certificate. An adversary could therefore create an arbitrary certificate with a serial number and an issuer string identical to a trusted certificate which LibreOffice would present as belonging to the trusted author, potentially leading to the user to execute arbitrary code contained in macros improperly trusted. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.1.

CNA Affected

[
  {
    "vendor": "The Document Foundation",
    "product": "LibreOffice",
    "versions": [
      {
        "version": "7.2",
        "status": "affected",
        "lessThan": "7.2.7",
        "versionType": "custom"
      },
      {
        "version": "7.3",
        "status": "affected",
        "lessThan": "7.3.1",
        "versionType": "custom"
      }
    ]
  }
]